Three Portal servers, two ump servers do not show metrics in the USM for Top N, Group Trend Report.
One ump server displays the metrics correctly.
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In the working ump server the nisapi_wasp portlet was 8.40 and in the non-working ump servers this was 8.10
Data used to populate the UMP USM Group Trend reports/Top N are done by the nisapi_wasp portlet.
Since the version was lower in the two secondary umps where this is not working needed to get this to the right version first
Deploying nisapi_wasp 8.40 on the two ump servers having lower version to match the one on the working ump resolved the issue
Deactivate wasp during the nisapi_wasp deployment and activate after deployment.